A boy throws a ball of mass 0.25 kg straight upward with an initial speed of 20 m/s When the ball returns the boy, its speed is 17 m/s How much much work does air resistance do on the ball during its flight?

Q: A 550-turn solenoid is 10 cm long. The current into it is 35 A.A 3.5 cm -long straight wire cuts…

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Q: Find the final velocity after a perfectly inelastic collision with two objects, both of mass 4.0kg,…

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Q: A particle with a mass of 2.2 x 10-20 kg is oscillating with simple harmonic motion with a period of…

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Q: Six electrons are trapped in a one-dimensional infinite potential well of width L , in h? , (assume…

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Q: O). What is through the rectangularly shaped volume? Assume 3 significant digits. X 7 tw 2.0 m ZA…

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Q: What is the uncertainty, (±), of: (a) 9.5 cm (b) 17 mL (c) 2.0100 g

A: uncertainty is the values which cannot be precisely or accurately measure with a given set of…

Q: can you check your answer for the last problem because I am getting 1.07

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Q: a. Draw an energy level diagram (doesn't have to be to scale) indicating the transitions that…

A: We know that for a particle trapped in an one dimensional infinite potential well (square) must have…

Q: .02 inches per second is equivalent to how many ft per hour? using dimensional analysis

A: Given  0.2 inch  per second  Let x be the value in ft /hr  Thus    0.2 inch /sec = x ft /hr

Q: 4,320 minuTES ARE EQUIVALENT TD DXTS? TEET ARE THEKE IN ARODM MEAVUK

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: You have a twin that stays at home on the Earth while you travel in a spaceship. You leave Earth…

A: Given, You and your twin age=20years Total travel time, tspaceship =5years After 5 years, a long…

Q: Round off the answer to the same number of significant digits as are in the measurement with the…

A: We are given 2 physical quantities. First is dimension of mass. Other is dimension of volume. We…

Q: Convert 660,00 furlongs/fortnight to ft/min

A: 1 furlong is 220 yards 1 yard = 3 feet 1 fortnight is 2 weeks 1 week = 7 days 1 day = 24 hours  1…

Q: EXOQ Compare the auxillary equations in the cases of the double rod ordented Vertically (figure…

A: Step 1: Auxiliary equation comparision ;(a) Vertical rod In figure 1.2(a) :For the vertical double…

Q: Calculate .456 x 12.54 keeping only significant figures.

A: Given : To calculate  .456 x 12.54 keeping only significant figures.

Q: Determine how many sig figs are in the following values. 1. 267562

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Q: Can you explain why we need to multiply the 3000 by pi/180

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Q: A large sheet of construction paper measures 20mm by 15mmand the volume is 4mm³, where v=lwt A. What…

A: A) Write the expression for the volume and substitute the required values.

Q: so b= 6.09 s^-2  but you used 5.21. when I plug in the answers its wrong, can you please fix this.

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Q: Using the rules of significant figures, calculate the multiplication of A = 48.399 and B = 0.849:

A: To multiply A = 48.399 and B = 0.849 using significant figures, we follow these steps: Count the…

Q: (b) To what temperature must the body be heated until its peak thermal radiation is in the red…

A: A blackbody is an ideal concept which absorbs all the wavelengths and also emits all the wavelengths…

Q: Your answer is partially correct. The figure shows wire 1 in cross section; the wire is long and…

A: Givencurrent in wire 1 (I1)=4.20 mADistance (d1)=2.48 cmDistance (d2)=5.14 cmcurrent in wire 2=6.83…

Q: wouldnt it be just 30 divided by 1.5 = 20

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